Respuesta :

[tex]Let \: the \: base \: be \: x, \: the \: height \: would \: be: \:x-6\\The \: area \: is: \: [/tex]

[tex] \frac{x(x - 6)}{2} = 260 \\ {x}^{2} - 6x = 520 \\ {x}^{2} - 6x - 520 = 0 \\ (x + 20)(x - 26) = 0 \\x = 26[/tex]